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by ASchmidt
August 13th, 2008, 3:44 pm
Forum: Technical Forum
Topic: Complex logarithm in Heston model
Replies: 7
Views: 52603

Complex logarithm in Heston model

Harassment!
by ASchmidt
August 13th, 2008, 8:41 am
Forum: Technical Forum
Topic: Complex logarithm in Heston model
Replies: 7
Views: 52603

Complex logarithm in Heston model

Hi,I have the solution to this. If you still need it, let me know and I can post some of my Matlab code.-A
by ASchmidt
June 30th, 2008, 2:03 pm
Forum: Student Forum
Topic: Richardson extrapolation as described in Paul's book
Replies: 12
Views: 55434

Richardson extrapolation as described in Paul's book

<t>QuoteOriginally posted by: CuchulainnQuoteOriginally posted by: MCarreiraAlthough I missed your answer by 3 min, the quit smoking part is still valid.smoke is not only bad for lungsSee, I really wanted to quit, but you guys are just too slow. Now I have to continue smoking and die.And you (especi...
by ASchmidt
June 30th, 2008, 1:36 pm
Forum: Student Forum
Topic: Richardson extrapolation as described in Paul's book
Replies: 12
Views: 55434

Richardson extrapolation as described in Paul's book

Man! That was close! ;-)And, as for the quit smoking part, you'll want to send your request here. ;-)
by ASchmidt
June 29th, 2008, 10:59 am
Forum: Student Forum
Topic: Richardson extrapolation as described in Paul's book
Replies: 12
Views: 55434

Richardson extrapolation as described in Paul's book

<t>Solution:where 10=200/20 (Smax divided by 20 steps) and 6.667=200/30 (Smax devided by 30 steps).In hindsight it really wasn't that hard o_O...My problem was that I interpreted the deltaS^2 as the error. (Why? I don't know... but next time it guess I should begin reading at the beginning of the ch...
by ASchmidt
June 27th, 2008, 2:35 pm
Forum: Student Forum
Topic: Richardson extrapolation as described in Paul's book
Replies: 12
Views: 55434

Richardson extrapolation as described in Paul's book

<t>QuoteOriginally posted by: TraderJoeQuoteOriginally posted by: ASchmidtHere is what I tried...which corresponds with the exact BSM value. However, how can I use these number to end at 13.275, the "Richardson Extrapolation"?Well, first up, you could quit smoking....Help me solve my (apparently qui...
by ASchmidt
June 27th, 2008, 1:41 pm
Forum: Student Forum
Topic: Richardson extrapolation as described in Paul's book
Replies: 12
Views: 55434

Richardson extrapolation as described in Paul's book

Here is what I tried...which corresponds with the exact BSM value. However, how can I use these number to end at 13.275, the "Richardson Extrapolation"?
by ASchmidt
June 27th, 2008, 11:08 am
Forum: Student Forum
Topic: Richardson extrapolation as described in Paul's book
Replies: 12
Views: 55434

Richardson extrapolation as described in Paul's book

<t>QuoteOriginally posted by: PaulWell, you've got the numbers wrong to start with!Expl. Finite difference with 20 asset steps gives 13.067 (error = 0.202)Expl. Finite difference with 30 asset steps gives 13.183 (error = 0.286)etc.PI'm stupid -- I posted the wrong numbers here, but I used the right ...
by ASchmidt
June 27th, 2008, 10:09 am
Forum: Student Forum
Topic: Richardson extrapolation as described in Paul's book
Replies: 12
Views: 55434

Richardson extrapolation as described in Paul's book

<t>Hi wilmotters,I'm trying to make sense of the "this is so simple you should always try it" Richardson extrapolation as described in Paul Wilmott's book on page 1443. As an example Paul calculates prices for an option with 3 different methods:Analytical BSM gives 13.269Expl. Finite difference with...
by ASchmidt
June 9th, 2008, 4:58 pm
Forum: Off Topic
Topic: Pants: Pleats vs. flat-fronts?
Replies: 4
Views: 53167

Pants: Pleats vs. flat-fronts?

If you look at any quality suit you'll see that the pants have pleats. Jeans and chinos, however, look very odd when they have pleats, so I would definitely go for flat fronts when wearing these.
by ASchmidt
April 6th, 2008, 10:05 pm
Forum: Student Forum
Topic: basic Ito lemma question
Replies: 5
Views: 57494

basic Ito lemma question

<t>as you see it is basically the 'time' part in the beginning and then the sum of the individual dimensions plus (if applicable) some correlation terms. then the multiplication rules are used. when i learned that some time ago i memorized it this way (i know it's mathematically non-rigorous, but he...
by ASchmidt
April 6th, 2008, 8:54 pm
Forum: Student Forum
Topic: basic Ito lemma question
Replies: 5
Views: 57494

basic Ito lemma question

then
by ASchmidt
April 6th, 2008, 8:00 am
Forum: General Forum
Topic: wiener process/brownian motion
Replies: 24
Views: 70887

wiener process/brownian motion

<t>QuoteOriginally posted by: TraderJoeQuoteOriginally posted by: ASchmidtQuoteOriginally posted by: TraderJoeQuoteOriginally posted by: torontosimpleguycheck the web: there is 5-th edition freely available in pdf.Have the publishers legally agreed to this? If not, you really shouldn't be advertisin...
by ASchmidt
April 5th, 2008, 9:22 pm
Forum: General Forum
Topic: wiener process/brownian motion
Replies: 24
Views: 70887

wiener process/brownian motion

<t>QuoteOriginally posted by: TraderJoeQuoteOriginally posted by: torontosimpleguycheck the web: there is 5-th edition freely available in pdf.Have the publishers legally agreed to this? If not, you really shouldn't be advertising it publicly.Ummm... yeah. I'm sure Hull finds that ok. o_OThen again ...
by ASchmidt
April 5th, 2008, 9:05 pm
Forum: General Forum
Topic: wiener process/brownian motion
Replies: 24
Views: 70887

wiener process/brownian motion

<t>QuoteOriginally posted by: jimjohndoes anyone know any good links where i can understand this process, wahtever ive found so far is too complicated, i want a gentle introduction. also, can someone plz explain what the drift rate means. is this the same concept as mean reversion? thx so much.It's ...
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